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PT8A976 Datasheet Preview

PT8A976 Datasheet

3/2 Function Decoder for Remote Controller

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Data Sheet
PT8A976/976A/976B
3/2-Function Decoder for Remote Controller
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Features
Introduction
Common features
• Operating power-supply voltage range: 2.0 to 5.5V
• Manual-powe-on/off with ON/OFF button
• One output pin used for external power control
• On-chip oscillator with an external resistor
• On-chip reversing amplifiers
• Low operating current
• Few external components needed
• Package: 16-pin DIP and 16-pin SOIC
PT8A976
• Four output pins for three functions
• Auto-power-off if no signals received in 6 minutes
PT8A976A
• Four output pins for three functions
• Manual Power on/off function
PT8A976B
• Two output pins for three functions
• Compatible with RX3 and MR3
Ordering Information
Par t No.
Package
PT8A976P/976AP/976BP
PT8A976BW
16-pin DIP
16-pin SOIC
PT8A976BDE
Die Form
Logic Block Diagram
PT8A976’s Logic Block Diagram
The PT8A976, PT8A976A and PT8A976B are CMOS LST
designed for the remote controlled toy. The received signal is
amplified by the three-stage amplifier, and then the appropri-
ate amplified signal is sampled, fault-tolerantly checked and
decoded to control the actions of the remote-controlled
toy.There is an oscillator in all of the PT8A976 , PT8A976A
and PT8A976B. By adding an external resistor conveniently,
the oscillator will be constructed. The oscillator frequency
can be adjusted by the external resistor. Pressing the ON/OFF
button can control the output level of the PC pin.
PT8A976, the auto-power-off function is achieved by an in-
ternal counter. When the PT8A976 is powered on the counter
is reset and begin to count. Any received encoding signal also
reset the counter. The PC output pin will keep on a high level
until the counter counts up to about 6 minutes. The PC output
is used to control on/off state of the external power supply.
PT8A976A/976B not provide auto-power-off function.
PT8A976/976A have four output pins corresponding with the
three actions: Forward (Forward), Backward and Left.
PT8A976B has only two output pins corresponding with the
two actions: Forward and Backward.
ON/OFF
OSCI
Oscillator
OSCO
.comSI
et4uVI1
tasheVI2
www.daPT0081(08/02)
Amp.
Amp.
Amp.
Timing
Generator
Signal Sample
and
Fault-Tolerant
Check
VO1
VO2
6 Minutes
Counter
Decoding
Circuit
1
Power
Control
Output
Circuit
PC
FORWARD
FORWARD
BACKWARD
LEFT
Ver:5




PT

PT8A976 Datasheet Preview

PT8A976 Datasheet

3/2 Function Decoder for Remote Controller

No Preview Available !

Data Sheet
PT8A976/976A/976B
3/2-Function Decoder for Remote Controller
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
PT8A976A’s Logic Block Diagram
OSCI
OSCO
Oscillator
Timing
Generator
ON/OFF
Power
Control
PC
SI Amp.
VI1 Amp.
Signal Sample
and
Fault-Tolerant
Check
VO1
Decoding
Circuit
Output
Circuit
FORWARD
FORWARD
BACKWARD
LEFT
VI2 Amp.
VO2
PT8A976B’s Logic Block Diagram
OSCI
OSCO
Oscillator
Timing
Generator
SI Amp.
VI1 Amp.
VI2 Amp.
Signal Sample
and
Fault-Tolerant
Check
VO1
VO2
Decoding
Circuit
Output
Circuit
FORWARD
BACKWARD
PT0081(08/02)
2
Ver:5


Part Number PT8A976
Description 3/2 Function Decoder for Remote Controller
Maker PT
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PT8A976 Datasheet PDF






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